| /* |
| * Copyright (c) 2021 Arm Limited. All rights reserved. |
| * SPDX-License-Identifier: Apache-2.0 |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| #include "ImageUtils.hpp" |
| |
| void convertImgIoInt8(void * data, const size_t sz) |
| { |
| uint8_t * tmp_req_data = static_cast<uint8_t *>(data); |
| int8_t * tmp_signed_req_data = static_cast<int8_t *>(data); |
| |
| for (size_t i = 0; i < sz; ++i) { |
| tmp_signed_req_data[i] = static_cast<int8_t>( |
| static_cast<int32_t>(tmp_req_data[i]) - 128); |
| } |
| } |
| |
| void convertImgIoGreyscale(const uint8_t * srcPtr, uint8_t * dstPtr, const size_t sz) |
| { |
| for (size_t i = 0; i < sz; ++i, srcPtr += 3) { |
| *dstPtr++ = 0.2989 * (*srcPtr) + |
| 0.587 * (*(srcPtr+1)) + |
| 0.114 * (*(srcPtr+2)); |
| } |
| } |